The Design and Realization of 1:200000 Digital Hydrology Geology Map Spatial Date Base
Chen Wei-gong
Qingdao Institute of Architecture and Engineering
China
ch.ylh@163.com
Yue LI-hong
Abstract
1:200000 hydrology geology map is the most important hydrology materials in China.
1:200000 digital hydrology geology map spatial data base, that was established by means of MAPGIS as the flat roof, was one of important components of “digital land”. Firstly, the model of database was constructed in this paper. Secondly, the vector basic data was inputted, the graphic elements (such as dots, lines, and so on.) were edited, errors were corrected, and the layer file was established. In the end, the attributes were connected, the projection conversion was carried, and data format were converted in order to forming Arc/Info and Arcview format. SO the digital hydrology geology map spatial database was established. The important basic data for spatial analysis and all-purpose development can obtained from this database.